Question
Why is the repayment payment much higher than the draw payment?
Many HELOCs allow interest-only payments during the draw period, then require principal repayment over a shorter amortization window later.
Financial
Use OmniCalc's HELOC calculator to estimate available credit, interest-only draw payments, and the repayment-phase payment jump once the line starts amortizing.
HELOC calculator
Use home value, current mortgage balance, CLTV limit, planned draw amount, rate, draw period, and repayment period to estimate how a HELOC behaves before and after repayment begins.
Why this result matters
A revolving home-equity borrowing planner focused on available line size, interest-only draw payments, and the jump into amortized repayment. Use the tool above to enter a few clear inputs and get a practical answer you can use right away.
This HELOC calculator estimates available credit line, effective draw amount, interest-only draw payment, amortized repayment payment, payment shock, and combined LTV. It stays distinct from the fixed home equity loan page by modeling revolving line behavior instead of a fixed lump-sum second mortgage.
Formula and method
The calculator applies a CLTV limit to current home value, subtracts the current mortgage to estimate available line size, caps the planned draw at that amount, then compares the interest-only draw payment with the later amortized repayment-phase payment.
Example
If a homeowner wants flexible borrowing instead of a fixed second mortgage, the calculator helps estimate available line size and how much payments can jump when the draw period ends.
FAQ
Short answers to the questions people often ask before or after using the tool.
Question
Many HELOCs allow interest-only payments during the draw period, then require principal repayment over a shorter amortization window later.
Question
The home equity loan calculator models a fixed lump-sum second loan. This page models a revolving line with a draw phase and a repayment phase.
Question
Often no. Many HELOCs have variable rates, so this calculator is a planning estimate based on the rate you enter today.
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